Trap



1. J. MCDONALD.

TRAP.

APPLICATION FILED OCT. 6. 1.919.

Patented July 19, 1921,

All a JAMES J. MCDONALD, OF CLEVELAND, OHIO.

TRAP.

Specification of Letters Patent.

Patented July 19, 1921.

Application filed October 6, 1919. Serial No. 828,747.

T all whom it may concern:

Be it known that T, JAMES J. lilcDoNALn, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Traps, of which the following is a specification.

This invention relates to traps, and more particularly to traps which are employed with the lines of vacuum and pressure heatin; systems. V

The objects of the invention are to provide a simple, reliable and effective trap construction embodying an outlet valve through which water of condensation that may accumulate within the trap may be periodically discharged automatically, and to provide a trap of this character that is noiseless in operation, that comprises coinpa *atively few parts, making it economical to manufacture.

A further object of the invention is to provide means for the escapement of air when steam is turned onto the system, and to take care of the water remainingin the trap after the steam has been cut off.

The improvement further provides for easy access to the interior, or to the working parts of the trap, thereby facilitating the assembling of the elements, and reducing to a minimum the cost of repairs if the operating parts become damaged or dislodged. from any cause.

The above mentioned, and other apparent objects, are identical with those of another improved trap construction inventedby me, and for which a separate application for Letters Patent is filed.

ld lth these objects in view, generally speaking, the invention may be delined as consisting in the construction as hereinafter described and in the combination of ele ments embodied in the appendedclaims, and as illu'st *ated in the'jdrawings forming a part of the specification, wherein Figure 1 represents a central. vertical section through the trap, showing the valve closed, and Fig. 2 is a similar section, showing the relative position of the operating members when the valve is open. Fig. 3 is a plan view with the casing closure cap removed. Fig. 4. is an elevation of the valveseat fitting detached, and Fig. 5 shows the capillary port located in the valve stem, a. modification hereinafter set forth.

Throughout the following description and in the several figures of the drawing, similar reference characters are employed to designate corresponding parts.

The present invention embodies a simplified and more efficient construction than that employed in a device of this character. for which I obtained Letters Patent of the United States No. 1,086,066, February 3rd, 191%, and therefore it may be considered as an improvement on said device.

The present embodiment of my invention comprises a casing 1. This casing may be generally cylindrical in shape and is provided above the bottom thereof with a branch 2 adapted for connection with a radiator outlet, not shown.

The casing l is provided at its upper end with a suitable cover 3, which is shown as provided with an outwardly projecting flange at adapted to engage the top of the casing l and being provided below such flange with a skirt 5 havin an external thread adapted to fit in the internal thread at the top of the casing.

The bottom of the casing is provided with a connection 6, having its lower end provided with a thread for the reception of a pipe, which may be the return pipe of a vacuum or pressure heating system. The bottom of the casing merges with connection 6 by means of an inverted frusto-couical surface 7, which is adapted to receive a similarly tapered valve-seat fitting S.

The foregoing description is applicable to the subject of my former Patent No. 1,086,066 above referred to, and I will now set forth the improvements in the construction.

The valve-seat fitting 8 is provided with a recess 9 in the lower face thereof for the reception of a valve 10, said valve being provided with a stem 11 projecting upwardly through an aperture 19. in the top of the member 8. The member 8 is provided with an upwardly extending arm 8, which is preferably integral with said member 8, and when the member 8 is seated in the part 7 of the casing, the arm 8 is in juxtaposition to the interior wall of the casing, and terminates at the threaded part 1. The upper end S" of said arm has a male taper formed thereon adapted to fit a female taper 1 formed in the casing, as best shown in Fig. 3. When assembled, the skirt portion 5 of the cap 3 bears on the upper terminal of the arm and retains the member 8 tightly fitted in the seat 7.

The arm 8 is provided with an inwardly projecting fin 8 which acts as a support for a lever 13, said lever being forked, as shown, straddles the member 8 and is fulcrumed thereon at 14:. 'Rigidly attached tothe long arm of the lever 13 is a float 15, while the forked arm of said lever is pivotally connected at 16 with the valve stem 11.

The air and steam enters the casing through the connection 2, the water of condensation collects in the chamber 17 and causes the fioat 15 to rise, thereby forcing the stem 11 down, through the medium of the lever 13. This causes the valve 10 to recede from the under-seat formed by the recess 9 in the member 8. The water is then discharged from the chamber 17 through the aperture 12 and recess 9 into the return line pipe connected with the member 6. v

A capillary port 18 may be provided in the arm 8, saic port opening into the chamber 17 at 18 and into the valve seat at 18 This port is for the purpose of permitting the escapeof air when steam is turned onto the system, also water of condensation which may accumulate, especially the water remaining in the trap after steam has been cut off from the system or from the part thereof with which the trap may be employed.

In the modification shown in Fig. 5, the capillary port, indicated by 11*, is in the lve stem 11, opening into the chamber at 11 in juxtaposition to the top of the member 8. It is obvious that the function is the same, with the port in the arm 8*, or in the stem 11.

The working parts of the trap being as sembled and connected in proper relative arrangement, can be inserted as a unit, in the casing 1, and held in placeby thecap 3 when said cap is screwed down tight.

What I claim and desire to secure by. Letters P'atent is: I

1. In a device of the character set forth, the combination of a casing, and a threaded closure cap in the top thereof, said casing having an inlet connection and provided with an outlet connection in the bottom thereof having at its upper end an outwardly flaring seat, a valveeseat fitting provided with a complementary flared surface engaging the flared-seat of the outlet connecthereof, a valve in said fitting having a stem extending through said aperture, said valveseat fitting provided withan upwardly extending arm adapted for engagement with the closure cap, an inward projection on said arm near the top thereof, a lever fulcrumed on said projection, one arm of said lever pivotally connected a float fixed to and depending posite arm of said lever.

2. In a device of the character set forth, the combination of a'casing and a closure cap threaded into the top thereof, said casing having an inlet and provided with an out-let in the bottom thereof, a vertically reciprocal valve for said outlet, said valve pro vided with an upwardly extending stem, a valve-seat fitting with which said valve cooperates, said fitting being seated in the outlet and provided with an arm which extends upwardly in juxtaposition to the inner periphery of the casing and is engaged by the closure cap, a float, a lever rigidly attached to the top of said float, said lever being fulcrumed on the upwardly extending armaud pivotally connected with the valve stem, the upwardly extending arm of the valve-seat fitting being provided with a port that opens into the chamber provided in the casing, and into the valve seat.

3. In a device of the character set forth, the combination of a casing and a closure cap threaded into the top thereof, said casing having an inlet and provided with an outlet in the bottom thereof, a vertically reciprocal valve for said outlet, said valve provided with an upwardl extending stem, :1 alve-seat fitting with which said valve cooperates, said fitting being seated in the outlet and provided with an arm which extends upwardly in juxtaposition to the inner periphery of the casing and is engaged by the closure cap, to the top of said float, said lever being fulcrumed on the upwardly extending arm and pivotally connected with the valve stem, the valve stem being provided'with a capillary port that opens into the chamber provided in the casing, in juxtaposition tothe top of the valve-seat fitting.

In testimony whereof I afiix my signature.

' JAMES J. MoDONALD.

from the opwiththe valve stem, and

a float, a lever rigidly attached 

